One of Boston Dynamics' most interesting and insane robots called BigDog recently got a workout in Hawaii as part of a field test by the U.S. Marines.

According to the company, which is headquartered in Waltham and owned by Google: BigDog is a rough-terrain robot that walks, runs, climbs and carries heavy loads, according to the company. BigDog has four legs that are articulated like an animal’s, with compliant elements to absorb shock and recycle energy from one step to the next.

BigDog, which was originally funded by the Defense Advanced Research Projects Agency (DARPA), is the size of a large dog or small mule — about 3 feet long, 2.5 feet tall and weighs 240 pounds. The robot is designed to run at "4 mph, climb slopes up to 35 degrees, walks across rubble, climb muddy hiking trails, walk in snow and water, and carry [a] 340 pound load."